Ask PayslipIQ · Last reviewed 2026-05-08
What is PAYE?
PAYE stands for Pay As You Earn. It is the UK system through which employers deduct income tax and National Insurance from your pay before it lands in your bank account, and pass those deductions to HMRC on your behalf.
PayslipIQ provides educational information and estimated calculations only. It does not provide tax, legal, financial, payroll, accounting, pension, benefits or employment advice. Always verify your payslip, tax code, deductions and take-home pay with your employer's payroll department, HMRC, your pension provider, a qualified accountant, tax adviser or another appropriately qualified professional.
Most UK employees never need to file a tax return because PAYE handles their tax in real time. The amount your employer deducts each pay period is determined by your tax code and your earnings to date.
PAYE is cumulative, meaning HMRC tracks your year-to-date pay and tax. If you are overpaid or underpaid mid-year, the next pay period normally adjusts to bring you back on track.
The system breaks when employers have wrong information (no P45, wrong code, missing student loan flag). That is when refunds or under-deductions appear later.
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Reviewed by PayslipIQ Editorial. Sources cited where applicable.
PayslipIQ provides educational information and estimated calculations only. It does not provide tax, legal, financial, payroll, accounting, pension, benefits or employment advice. Always verify your payslip, tax code, deductions and take-home pay with your employer's payroll department, HMRC, your pension provider, a qualified accountant, tax adviser or another appropriately qualified professional.